#include "Lapack.h"
#include <cmath>

using namespace std;

double Lapack::sasum(int *n, float *sx, int *incx)
{
    /* System generated locals */
    int i__1, i__2;
    float ret_val, r__1, r__2, r__3, r__4, r__5, r__6;
    /* Local variables */
    static int i__, m, mp1, nincx;
    static float stemp;
/*  Purpose   
    =======   
       takes the sum of the absolute values.   
       uses unrolled loops for increment equal to one.   
       jack dongarra, linpack, 3/11/78.   
       modified 3/93 to return if incx .le. 0.   
       modified 12/3/93, array(1) declarations changed to array(*)   
       Parameter adjustments */
    --sx;
    /* Function Body */
    ret_val = 0.f;
    stemp = 0.f;
    if (*n <= 0 || *incx <= 0) {
	return ret_val;
    }
    if (*incx == 1) {
	goto L20;
    }
/*        code for increment not equal to 1 */
    nincx = *n * *incx;
    i__1 = nincx;
    i__2 = *incx;
    for (i__ = 1; i__2 < 0 ? i__ >= i__1 : i__ <= i__1; i__ += i__2) {
	stemp += (r__1 = sx[i__], abs(r__1));
/* L10: */
    }
    ret_val = stemp;
    return ret_val;
/*        code for increment equal to 1   
          clean-up loop */
L20:
    m = *n % 6;
    if (m == 0) {
	goto L40;
    }
    i__2 = m;
    for (i__ = 1; i__ <= i__2; ++i__) {
	stemp += (r__1 = sx[i__], abs(r__1));
/* L30: */
    }
    if (*n < 6) {
	goto L60;
    }
L40:
    mp1 = m + 1;
    i__2 = *n;
    for (i__ = mp1; i__ <= i__2; i__ += 6) {
	stemp = stemp + (r__1 = sx[i__], abs(r__1)) + (r__2 = sx[i__ + 1], 
		abs(r__2)) + (r__3 = sx[i__ + 2], abs(r__3)) + (r__4 = sx[
		i__ + 3], abs(r__4)) + (r__5 = sx[i__ + 4], abs(r__5)) + (
		r__6 = sx[i__ + 5], abs(r__6));
/* L50: */
    }
L60:
    ret_val = stemp;
    return ret_val;
} /* sasum_ */